This is just my personal opinion but I think social media like Facebook makes it appear that everyone is a really outgoing person who loves socializing and has many interesting hobbies. Hiking and yoga seem to be the most popular "look at me!" types of posts.
I think the image that many go for on facebook is a workaholic hiker who does yoga and gardens and cans their own pickles. Who has time for all that crap?
I am learning to be comfortable with the fact that I am an introvert. I am learning to be comfortable with the fact that I don't like hiking or yoga. I am also more straightforward about these things with people.
I am now pretty open that I don't like parties. I like them for an hour or two. My coworkers ask me to go dancing and I told the I'd rather watch paint dry. We had a laugh about that but I was open that sober dancing to me sounds like a nightmare.